Fire-door-releasing device.



No.893 ,047. PATENTEDJULY14,19O8.I

J. ,VvWISE,

I FIRE DOOR RBLEASING DEVICE. APPLICATION FILED u'u,12.19oa.

2 SHEETS-SHEET 1.

UNITED "P TENT nsssn viwnammfiim, umaissmm TO THE momansinimimcruameCOMPANY, OF AURORA, ILLINOIS. I

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Specification of Lettermlntent.

' Patented July 14, 1908,

. Application filed Harch'12, 1906. Seria1'No.805,4j78.

To all whom it may concemi; Be it known that. I, JEssE V. WISE, acitizen of the United- States, residing at Oak nois, have inventedcertain new and useful Improvements in Fire-Door-Releasing De vices, ofwhich the following is avspecification. I

This invention relates to improvements in means forautomatically-releasing and closing doors of the class known asfire-doors a The especial'object of the im rovements which form thesubject-matter 0 this appli-j cation is to provide means that can bereadily applied to slidable fire doors of the usual construction andarran ement, and that will automaticall and simu taneously release thedoorson bot sides of the door way or 0 ening when fire is present oneither side 0 the Wall in which such opening is provided.

A further object is to provide means that will facilitate the ordinaryopening and closing of the doors, and in which all the parts are exposedand are of simple mechanical construction.

In the accompanying drawing which forms a part of this application Ihave illustrated a preferred adaptation of my invention in the ollowingviews:Fi ure 1 shows in elevation, a portion of a fire-wall upon whichis erected a fire-door of ordinary construction to which is applied myinvention. detail on an enlarged scale of a part of my invention. Fig. 3is a cross section taken through the wall 3 of Fig. 1 at a point justabove the wires 20 Referring to the details of the drawing, 3 representsa brick fire-wall in which a doorway or arch 4 has been provided.Projecting from the top of the wall are joists 5, and secured to theface of the wall are an inclined door-hanger track 6, door sto s 7 andstayro1ler.8, all ofwhich are of wel known construction and arrangement.

Slidably mounted on the track by hangers 9 and adapted to move bygravity to a closed osition is a fire-door 10 of sheet 'metal, rolnone-edge of which projects an arm 11.

Secured at the up er or left hand (as shown) end of the trac by aset-bolt 12, is an Park, in the county of Cook and State of Illi'-- orwires 19 and 20.

Fig. 2isairon plate 13, in the center of which is astudbolt 14 whichprojects outwardly at ri ht angles from the ,p'ate. On the studolt ismounted a grooved ulley 15, and/between the pulley-and the bolt-head isplaced an iron strap 16',the.' edges of which are slightly grooved'attwo points toreceive loops'17 and 18 formedrespectivel on the ends ofropes he rope 19 passes under a pulley 21 secured to a weight 22 thenpasses over the pulley 15 and has its other end fastened to one memberof the fusible link 23, the other member of which is eonnected by ashort rope to the outerend of the arm 11. The weight 22 holds the dooropen against gravity.

The rope 20 passes over a pulley 26 sus- I pended from one of the joists5, and has its end secured to one member of the fusible link 24, theother member of which is secured to a rope 20 which passes over theswivel-pulley 27 which is sus endedfrom another joist 5. The ro e 20 ater leaving the pulley passes throug a hole 25 formed through the wall3, and it is connected with another swivel pulley (not shown) on theopposite side of the wall where the construction and arrangement of allparts described are duplicated.

The object in placing the fusible link 23 near the edge of the door isto subject it to heat that would be likely, because of the draft, to assthrough the doorway in case of fire on eit er side of the wall 3. Itwill be apparent that when the link 23 fuses, the rope 19, will be.relieved of the downward tension exerted by the weight 22 hence theweight will fall to the floor whereupon the outer end of the strap willbe pulled u wardly by the rope 20 until the loop slides 0111' the end ofthe strap, thus entirely releasings'aid' rope and ermitting the sameaction by the parts 'on't 1e opposite side of the wall.

If the link 24 should fuse first instead of 22 and thus release rope 20,the outer end of the strap 16 will be pulled downward by the weight 22thus permitting the loop 17 to slide from the strap, and push off loop18, thereby release door 10 and the correspondingly arranged andconnected door on the opposite side of the wall. 7

It will be understood that the closing of the door by sliding on thetrack 6 may be through gravity or through mechanical- I with this"requirement: 1,",I therefore do not shown but wish to be .1. Incombination with a'wall having an opening therein and slidable closuresarranged onopposite sides of said wall, means for holding-each of saiddoors inits open position, said'means comprising a rope connected withthe door, and with a pivoted bar, and carryinga tension device and afusible link, said tension device and link being arranged on the 'sideof the wall to which said closure is applied, and meane connectingthepivoted bar of one doorwith the pivoted bar of the other door, saidmeans comprising fusible links on opposite sides of said wall.

2. In combination with a wall having an opening therein and slidabledoors arranged on opposite sides of said Well, means for holding eachofsaid doors in its open position, said means comprising a ropeconnected with the door and removably connected with a pivoted bar, saidrope carrying a weight, and a fusible arranged near the forward edge ofthe closure, and a second rope rev movably connected with the bars onopposite sides of said wall, and com rising fusible links arranged onopposite sides of the Wall.

3. In combination, a hanger track, a slidable closure, a rope'secured atone end to said closure and carryin a slidable weight and a fusiblelink, a pulley secured to said track and carrying said rope, and meansholding said rope against the tension of said weight and door, saidmeans com risin a lever mounted on the spindle of sai pul ey,

' and a rope connected with said lever and held under tension.

4. In combination, a hanger track, a closure slidably mounted on saidtrack, means for holding said door inits open position said meanscomprising a pulley connected with said track, a-rope including afusible link,

prlsing secured at one end to the door, arranged on said pulley,carryinga weight and having a loop at its free end, a pivotally mounted barhaving its free end loosely engaged by said loop, and means for holdingsaid bar in engagement with said loop, said means coma rope engagingsaidbar, and having a fusible linktherein and held under tension.

This invention is designed to meet the re limited to the exactconstruction,

' r r means for holding said rope under tension I 5. In combination witha wall having an oplening therethrough, a closure arranged w en releasedto automatically cover said opening, holding means for said closure,comprising a fixed pulley, am e arranged on said pulley and secured tosai door and carrying a weight, a fusible link connected with said rope,and with the closure, a ivoted bar detachably connected with sai ropeand ad nlpted to be depressed by said weight, a second rope connectedwith said bar, a fusible element connected'with said rope, and

counter to the tension on the first named rope.

released to automatically cover' sai opening, holdin bar detachablyconnected with each end of said rope, and two weight-carryin ropesincluding fusible elements, each etachably connected to one of saidbars, and secured to one of said closu'res. V

7. In combination, a-hanger-track, a closure slidably supported on saidtrack, a fusible device connected with said closure, a rope connectedwith said fusible device, tension means connected with said ro e, apulley carrying said rope, a pivoted air dlrectly connected with saidrope and pulley, a second rope directly comiected with said bar andadapted to normally hold it against, the tension means-of the firstnamed ro e, and a fusible device connected with sai second ro e.

In door. holding and releasing means, a pivoted bar, flexible andfusible means detachably connecting said bar andthe door, a tensiondevice carried by said means, and flexible means directly and detachablycon nected with said bar and adapted to normally hold it against saidtension device.

9. In a door holdin and releasing means, a pivoted bar, a rope ectlyconnected with sa1d bar, a weight carried b said rope, a fusibleconnection between sald rope and-the in presence of two witnesses;

' JESSE V. WISE.

Witnesses:

WM. B. MOORE, F. BENJAMIN.

means for said closurescomprising a rope s dably extending through saidwall and having arranged therein a fusiblalink at a point on each sideof said wall, a pivoted 6. In combination with a wall having an door, asecond rope directly connected with

